Paper · 2019 · Plants

Seed Pretreatment and Foliar Application of Proline Regulate Morphological, Physio-Biochemical Processes and Activity of Antioxidant Enzymes in Plants of Two Cultivars of Quinoa (Chenopodium quinoa Willd.)

Hira Yaqoob; Nudrat A. Akram; Samrah Iftikhar; et al.

18
claims
36
verbatim quotes
42
citations
1
research areas
✓
Open access · cc-by

Abstract

In the current study, the effects of exogenously applied proline (25 and 50 mM) and low-temperature treatment were examined on the physiochemical parameters in the plants of two cultivars (V1 and V2) of quinoa (Chenopodium quinoa Willd.). The seeds were also exposed to chilling stress at 4 °C before sowing. Plants raised from the seeds treated with low temperature showed reduced plant growth and contents of chlorophyll and carotenoids, but they had significantly increased contents of malondialdehyde, proline, ascorbic acid, total free amino acids, total soluble sugars, and total phenolics, as well as the activity of the peroxidase (POD) enzyme. Cold stress applied to seeds remained almost ineffective in terms of bringing about changes in plant root, hydrogen peroxide, glycine betaine and activities of superoxide dismutase (SOD), and catalase (CAT) enzymes. The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content. Overall, foliar application of proline was better than the seed treatment in improving root dry weight, root length, chlorophyll a, carotenoids, glycine betaine, ascorbic acid and superoxide dismutase activity, whereas seed pre-treatment with proline was effective in improving shoot dry weight, shoot length, hydrogen peroxide, malondialdehyde, and peroxidase activity in both quinoa cultivars.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 18

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seed chilling reduced plant growth.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoae1
Treatment
seeds treated with low temperaturee0
Outcome
plant growthe0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants raised from the seeds treated with low temperature showed reduced plant growth and contents of chlorophyll and carotenoids, but they had significantly increased contents of malondialdehyde, proline, ascorbic acid, total free amino acids, total soluble sugars, and total phenolics, as well as the activity of the peroxidase (POD) enzyme.”

✓ located verbatim in the source · abstract, characters 309–652 · show in text ↑
e1

“quinoa (Chenopodium quinoa Willd.)”

✓ located verbatim in the source · abstract, characters 203–237 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seed chilling reduced contents of chlorophyll and carotenoids.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoae1
Treatment
seeds treated with low temperaturee0
Outcome
contents of chlorophyll and carotenoidse0
Direction
reducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants raised from the seeds treated with low temperature showed reduced plant growth and contents of chlorophyll and carotenoids, but they had significantly increased contents of malondialdehyde, proline, ascorbic acid, total free amino acids, total soluble sugars, and total phenolics, as well as the activity of the peroxidase (POD) enzyme.”

✓ located verbatim in the source · abstract, characters 309–652 · show in text ↑
e1

“quinoa (Chenopodium quinoa Willd.)”

✓ located verbatim in the source · abstract, characters 203–237 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Seed chilling increased contents of malondialdehyde, proline, ascorbic acid.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoae1
Treatment
seeds treated with low temperaturee0
Outcome
contents of malondialdehyde, proline, ascorbic acide0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants raised from the seeds treated with low temperature showed reduced plant growth and contents of chlorophyll and carotenoids, but they had significantly increased contents of malondialdehyde, proline, ascorbic acid, total free amino acids, total soluble sugars, and total phenolics, as well as the activity of the peroxidase (POD) enzyme.”

✓ located verbatim in the source · abstract, characters 309–652 · show in text ↑
e1

“quinoa (Chenopodium quinoa Willd.)”

✓ located verbatim in the source · abstract, characters 203–237 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Seed chilling increased total free amino acids, total soluble sugars, and total phenolics.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoae1
Treatment
seeds treated with low temperaturee0
Outcome
total free amino acids, total soluble sugars, and total phenolicse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants raised from the seeds treated with low temperature showed reduced plant growth and contents of chlorophyll and carotenoids, but they had significantly increased contents of malondialdehyde, proline, ascorbic acid, total free amino acids, total soluble sugars, and total phenolics, as well as the activity of the peroxidase (POD) enzyme.”

✓ located verbatim in the source · abstract, characters 309–652 · show in text ↑
e1

“quinoa (Chenopodium quinoa Willd.)”

✓ located verbatim in the source · abstract, characters 203–237 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Seed chilling increased activity of the peroxidase (POD) enzyme.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoae1
Treatment
seeds treated with low temperaturee0
Outcome
activity of the peroxidase (POD) enzymee0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Plants raised from the seeds treated with low temperature showed reduced plant growth and contents of chlorophyll and carotenoids, but they had significantly increased contents of malondialdehyde, proline, ascorbic acid, total free amino acids, total soluble sugars, and total phenolics, as well as the activity of the peroxidase (POD) enzyme.”

✓ located verbatim in the source · abstract, characters 309–652 · show in text ↑
e1

“quinoa (Chenopodium quinoa Willd.)”

✓ located verbatim in the source · abstract, characters 203–237 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Seed cold stress was almost ineffective for plant root, hydrogen peroxide, glycine betaine.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
Cold stress applied to seedse0
Outcome
plant root, hydrogen peroxide, glycine betainee0
Direction
almost ineffectivee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Cold stress applied to seeds remained almost ineffective in terms of bringing about changes in plant root, hydrogen peroxide, glycine betaine and activities of superoxide dismutase (SOD), and catalase (CAT) enzymes.”

✓ located verbatim in the source · abstract, characters 653–868 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Seed cold stress was almost ineffective for activities of superoxide dismutase (SOD), and catalase (CAT) enzymes.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
Cold stress applied to seedse0
Outcome
activities of superoxide dismutase (SOD), and catalase (CAT) enzymese0
Direction
almost ineffectivee0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Cold stress applied to seeds remained almost ineffective in terms of bringing about changes in plant root, hydrogen peroxide, glycine betaine and activities of superoxide dismutase (SOD), and catalase (CAT) enzymes.”

✓ located verbatim in the source · abstract, characters 653–868 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Exogenous proline increased plant growth.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
exogenous application of prolinee0
Outcome
plant growthe0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content.”

✓ located verbatim in the source · abstract, characters 869–1160 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Exogenous proline increased contents of chlorophyll, carotenoids, proline.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
exogenous application of prolinee0
Outcome
contents of chlorophyll, carotenoids, prolinee0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content.”

✓ located verbatim in the source · abstract, characters 869–1160 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Exogenous proline increased ascorbic acid, total free amino acids, phenolics.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
exogenous application of prolinee0
Outcome
ascorbic acid, total free amino acids, phenolicse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content.”

✓ located verbatim in the source · abstract, characters 869–1160 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Exogenous proline increased total soluble sugars.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
exogenous application of prolinee0
Outcome
total soluble sugarse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content.”

✓ located verbatim in the source · abstract, characters 869–1160 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Exogenous proline increased activities of SOD, POD, and CAT.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
exogenous application of prolinee0
Outcome
activities of SOD, POD, and CATe0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content.”

✓ located verbatim in the source · abstract, characters 869–1160 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Exogenous proline decreased malondialdehyde content.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
exogenous application of prolinee0
Outcome
malondialdehyde contente0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The exogenous application of proline significantly increased plant growth, the contents of chlorophyll, carotenoids, proline, ascorbic acid, total free amino acids, phenolics, and total soluble sugars, as well as the activities of SOD, POD, and CAT, but it decreased malondialdehyde content.”

✓ located verbatim in the source · abstract, characters 869–1160 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar application of proline was better for root dry weight, root length.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
foliar application of prolinee0
Outcome
root dry weight, root lengthe0
Direction
bettere0
Comparator
seed treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Overall, foliar application of proline was better than the seed treatment in improving root dry weight, root length, chlorophyll a, carotenoids, glycine betaine, ascorbic acid and superoxide dismutase activity, whereas seed pre-treatment with proline was effective in improving shoot dry weight, shoot length, hydrogen peroxide, malondialdehyde, and peroxidase activity in both quinoa cultivars.”

✓ located verbatim in the source · abstract, characters 1161–1556 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar application of proline was better for chlorophyll a, carotenoids, glycine betaine.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
foliar application of prolinee0
Outcome
chlorophyll a, carotenoids, glycine betainee0
Direction
bettere0
Comparator
seed treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Overall, foliar application of proline was better than the seed treatment in improving root dry weight, root length, chlorophyll a, carotenoids, glycine betaine, ascorbic acid and superoxide dismutase activity, whereas seed pre-treatment with proline was effective in improving shoot dry weight, shoot length, hydrogen peroxide, malondialdehyde, and peroxidase activity in both quinoa cultivars.”

✓ located verbatim in the source · abstract, characters 1161–1556 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar application of proline was better for ascorbic acid and superoxide dismutase activity.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
foliar application of prolinee0
Outcome
ascorbic acid and superoxide dismutase activitye0
Direction
bettere0
Comparator
seed treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Overall, foliar application of proline was better than the seed treatment in improving root dry weight, root length, chlorophyll a, carotenoids, glycine betaine, ascorbic acid and superoxide dismutase activity, whereas seed pre-treatment with proline was effective in improving shoot dry weight, shoot length, hydrogen peroxide, malondialdehyde, and peroxidase activity in both quinoa cultivars.”

✓ located verbatim in the source · abstract, characters 1161–1556 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed pre-treatment of proline was better for shoot dry weight, shoot length.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
seed pre-treatment with prolinee0
Outcome
shoot dry weight, shoot lengthe0
Direction
effectivee0
Comparator
foliar application of prolinee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Overall, foliar application of proline was better than the seed treatment in improving root dry weight, root length, chlorophyll a, carotenoids, glycine betaine, ascorbic acid and superoxide dismutase activity, whereas seed pre-treatment with proline was effective in improving shoot dry weight, shoot length, hydrogen peroxide, malondialdehyde, and peroxidase activity in both quinoa cultivars.”

✓ located verbatim in the source · abstract, characters 1161–1556 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed pre-treatment of proline was better for hydrogen peroxide, malondialdehyde, and peroxidase activity.

Taxon
quinoa (Chenopodium quinoa Willd.)Chenopodium quinoat0
Treatment
seed pre-treatment with prolinee0
Outcome
hydrogen peroxide, malondialdehyde, and peroxidase activitye0
Direction
effectivee0
Comparator
foliar application of prolinee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Chenopodium quinoa
Chenopodium quinoa · TaxonKurt Stueber · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Overall, foliar application of proline was better than the seed treatment in improving root dry weight, root length, chlorophyll a, carotenoids, glycine betaine, ascorbic acid and superoxide dismutase activity, whereas seed pre-treatment with proline was effective in improving shoot dry weight, shoot length, hydrogen peroxide, malondialdehyde, and peroxidase activity in both quinoa cultivars.”

✓ located verbatim in the source · abstract, characters 1161–1556 · show in text ↑
t0

“quinoa (Chenopodium quinoa Willd.)”

✓ located after whitespace/quote normalisation · title, characters 171–205 · show in text ↑

cold · growth · Chenopodium quinoa (quinoa)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

application · physiology: antioxidant enzymes · Chenopodium quinoa (quinoa)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

application · physiology: pigments · Chenopodium quinoa (quinoa)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

application · growth · Chenopodium quinoa (quinoa)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.